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| Experimental Research Based on Phased Array Ultrasonic Inspection Technology for Weld Joint Inspection of a Type of Aircraft Standing Bar |
| ZHANG Haibing，Sun Jinli，SUN Hongguang |
| （Qingdao Branch of Navy Aviation Engineering Institute，Qingdao 266041, China) |
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Abstract Weld joint of aircraft landing gear bear the major alternating stress and impact stress, which often lead to
fatigue cracks. According to the feature of landing gear damage and comparison of various detection methods, the ultrasonic
phased array inspection method is chosen, and the reference block is made as the test piece. Ultrasonic phased array
inspection can effectively detect the fatigue crack in weld joint through modeling and testing, and the problems that should
be solved in practical detection by experiment are pointed out.
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2016, 
